Apparatus

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sensors Mode-S transponder

4CA97C

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-ESV · BOEING 737-800

Hex
4CA97C
Octal
23124574
Decimal
5,024,124
Country
IE
Tail
EI-ESV
Type
B738
Broadcasting now · callsign RYR5TM · 36,000 ft
Flights observed
677
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 21:30 UTC

Current position

4CA97C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA97C falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
RYR7992 Ryanair 4 2026-06-03
RYR70PH Ryanair 4 2026-05-12
RYR5SR Ryanair 4 2026-04-16
RYR4ZJ Ryanair 4 2026-06-03
RYR2NN Ryanair 4 2026-05-12
RYR9LR Ryanair 3 2026-04-20
RYR9JQ Ryanair 3 2026-07-24
RYR9G Ryanair 3 2026-06-07
RYR9423 Ryanair 3 2026-05-30
RYR8XK - 3 2026-06-20
RYR8VV - 3 2026-07-18
RYR8BF - 3 2026-06-19
RYR81BC - 3 2026-06-19
RYR7TZ Ryanair 3 2026-06-07
RYR79QE Ryanair 3 2026-05-19
RYR761H Ryanair 3 2026-05-30
RYR6QV - 3 2026-07-04
RYR5NB Ryanair 3 2026-05-30
RYR58BE Ryanair 3 2026-04-14
RYR4ZA - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR76JH NAP → TIA Jul 26, 21:00 UTCJul 26, 21:30 UTC30m
2026-07-26 RYR7QN STN → NAP Jul 26, 17:25 UTCJul 26, 19:20 UTC1h 55m
2026-07-26 RYR2VJ SZZ → STN Jul 26, 13:25 UTCJul 26, 15:55 UTC2h 30m
2026-07-26 RYR5472 SOF → NAP Jul 26, 07:55 UTCJul 26, 09:25 UTC1h 30m
2026-07-26 RYR170F NAP → SOF Jul 26, 06:05 UTCJul 26, 06:55 UTC51m
2026-07-25 RYR1QK BER → TFS Jul 25, 18:20 UTCJul 25, 19:10 UTC50m
2026-07-25 RYR50DB NAP → VRN Jul 25, 16:50 UTCJul 25, 17:40 UTC50m
2026-07-25 RYR84TT CRL → PUY Jul 25, 14:30 UTCJul 25, 15:40 UTC1h 10m
2026-07-25 RYR17KF NAP → BCN Jul 25, 11:40 UTCJul 25, 13:25 UTC1h 45m
2026-07-25 RYR3KT - Jul 25, 07:50 UTCJul 25, 10:30 UTC2h 40m
2026-07-25 RYR9SC BNX → VIE Jul 25, 04:45 UTCJul 25, 06:45 UTC2h 0m
2026-07-24 RYR4669 CAG → NAP Jul 24, 18:35 UTCJul 24, 19:15 UTC40m
2026-07-24 RYR1PF - Jul 24, 16:55 UTCJul 24, 17:35 UTC40m
2026-07-24 RYR48AP - Jul 24, 14:55 UTCJul 24, 16:05 UTC1h 10m
2026-07-24 RYR84JW - Jul 24, 12:45 UTCJul 24, 14:05 UTC1h 20m
2026-07-24 RYR6FR ALC → BRS Jul 24, 11:05 UTCJul 24, 11:40 UTC35m
2026-07-24 RYR738U NAP → PMO Jul 24, 09:40 UTCJul 24, 10:05 UTC25m
2026-07-24 RYR354V TRN → NAP Jul 24, 07:25 UTCJul 24, 08:30 UTC1h 5m
2026-07-24 RYR9JQ AGP → LBA Jul 24, 05:10 UTCJul 24, 06:20 UTC1h 10m
2026-07-23 RYR38QM - Jul 23, 16:10 UTCJul 23, 17:40 UTC1h 30m
2026-07-23 RYR39UK - Jul 23, 13:50 UTCJul 23, 15:10 UTC1h 20m
2026-07-23 RYR8QW MME → PMI Jul 23, 12:05 UTCJul 23, 12:35 UTC30m
2026-07-23 RYR26NW NAP → CTA Jul 23, 10:35 UTCJul 23, 11:10 UTC35m
2026-07-23 RYR62BC PRG → NAP Jul 23, 07:40 UTCJul 23, 09:05 UTC1h 25m
2026-07-23 RYR85AX NAP → PRG Jul 23, 05:05 UTCJul 23, 06:35 UTC1h 30m
2026-07-22 RYR8ZU CHQ → EMA Jul 22, 17:55 UTCJul 22, 19:55 UTC2h 0m
2026-07-22 RYR4554 NAP → WMI Jul 22, 15:10 UTCJul 22, 17:10 UTC2h 0m
2026-07-22 RYR354V - Jul 22, 12:15 UTCJul 22, 13:15 UTC1h 0m
2026-07-22 RYR9JQ AGP → LBA Jul 22, 11:10 UTCJul 22, 11:30 UTC20m
2026-07-21 RYR15DG - Jul 21, 18:30 UTCJul 21, 19:00 UTC30m
2026-07-21 RYR2681 - Jul 21, 17:05 UTCJul 21, 17:30 UTC25m
2026-07-21 RYR85TC - Jul 21, 13:20 UTCJul 21, 15:55 UTC2h 35m
2026-07-21 RYR80ZY NAP → SNN Jul 21, 09:30 UTCJul 21, 12:20 UTC2h 50m
2026-07-21 RYR1QK BER → TFS Jul 21, 07:10 UTCJul 21, 07:55 UTC45m
2026-07-21 RYR50DB NAP → VRN Jul 21, 05:25 UTCJul 21, 06:15 UTC50m
2026-07-20 RYR354V - Jul 20, 20:35 UTCJul 20, 21:40 UTC1h 5m
2026-07-20 RYR9JQ AGP → LBA Jul 20, 18:35 UTCJul 20, 19:45 UTC1h 10m
2026-07-20 RYR6FR - Jul 20, 17:00 UTCJul 20, 17:30 UTC30m
2026-07-20 RYR738U - Jul 20, 15:30 UTCJul 20, 16:00 UTC30m
2026-07-20 RYR70FA - Jul 20, 13:40 UTCJul 20, 14:10 UTC30m
2026-07-20 RYR57YG NAP → CAG Jul 20, 11:55 UTCJul 20, 12:35 UTC40m
2026-07-20 RYR79SY - Jul 20, 09:20 UTCJul 20, 10:05 UTC45m
2026-07-20 RYR76JH NAP → TIA Jul 20, 06:45 UTCJul 20, 07:20 UTC35m
2026-07-19 RYR2998 ZTH → NAP Jul 19, 19:20 UTCJul 19, 20:25 UTC1h 5m
2026-07-19 RYR5UA SNN → MLA Jul 19, 17:15 UTCJul 19, 18:05 UTC50m
2026-07-19 RYR38QM - Jul 19, 14:15 UTCJul 19, 15:40 UTC1h 25m
2026-07-19 RYRY39UK - Jul 19, 11:55 UTCJul 19, 13:20 UTC1h 25m
2026-07-19 RYR19AF MAH → NAP Jul 19, 09:30 UTCJul 19, 10:30 UTC1h 0m
2026-07-19 RYR7169 NAP → MAH Jul 19, 07:05 UTCJul 19, 08:25 UTC1h 20m
2026-07-18 RYR256T CTA → NAP Jul 18, 21:10 UTCJul 18, 21:45 UTC35m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the EI-ESV page for operator, model, and routing details .

Mode-S 4CA97C frequently asked

What is Mode-S code 4CA97C?
4CA97C is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-ESV.
Where is Mode-S 4CA97C registered?
Mode-S code 4CA97C is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA97C broadcasting right now?
Yes. Mode-S 4CA97C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA97C, octal 23124574, decimal 5,024,124.
What flights does 4CA97C operate?
Mode-S 4CA97C has broadcast 20 distinct callsigns, including RYR7992, RYR70PH, RYR5SR, RYR4ZJ, RYR2NN.